code: def __call__(self, module, input):
      weight_sn, u = self.compute_weight(module)
      setattr(module, self.name, weight_sn)
      setattr(module, self.name + "_u", u)
  
file_path: DIG/dig/ggraph/method/GraphEBM/energy_func.py
imports: import torch
  from torch import nn
  from torch.nn import functional
label_desc: Use image node_id 4 for calling the SpectralNorm obj's underlying member method code with example usage: obj.__call__(module, input) without return types